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Cornerstone · Grades 3–5 Keystones #1 5 June 2015 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 5 June 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 6⁄8 + 4⁄6

    Answer: 17⁄12
  2. 2. Algebra Two-step equations

    Solve: 3x - 6 = 12

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 11cm and b = 7cm. Give your answer to 2 decimal places

    Answer: 13.04cm
  4. 4. Ratio Sharing in a ratio

    Share 84 in the ratio 2:1

    Answer: 56 and 28
  5. 5. Statistics Mean

    Calculate the mean of: 42, 7, 38, 41, 49, 46, 18. Give your answer to 2 decimal places

    Answer: 34.43

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